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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <assert.h>
#include "../src/io.h"
#include "../src/portsentry.h"
void TestSubstStringNormalCase(void);
void TestSubstStringNoMatch(void);
void TestSubstStringEmptyReplace(void);
void TestSubstStringNullInputs(void);
void TestSubstStringInvalidSize(void);
void TestSubstStringEmptyFindToken(void);
void TestSubstStringBufferOverflow(void);
void TestSubstStringExactFit(void);
void TestSubstStringMultipleReplacements(void);
void TestSubstStringOverlappingTokens(void);
void TestSubstStringSpecialCharacters(void);
void TestSubstStringUnicodeSafe(void);
void TestSubstStringBoundaryConditions(void);
void TestSubstStringNormalCase(void) {
char dest[100];
const char *source = "Hello world, hello universe";
const char *findToken = "hello";
const char *replaceToken = "hi";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 1);
assert(strcmp(dest, "Hello world, hi universe") == 0);
printf("Normal case test passed\n");
}
void TestSubstStringNoMatch(void) {
char dest[100];
const char *source = "Hello world";
const char *findToken = "xyz";
const char *replaceToken = "abc";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 0);
assert(strcmp(dest, "Hello world") == 0);
printf("No match test passed\n");
}
void TestSubstStringEmptyReplace(void) {
char dest[100];
const char *source = "Hello world hello";
const char *findToken = "hello";
const char *replaceToken = "";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 1);
assert(strcmp(dest, "Hello world ") == 0);
printf("Empty replace token test passed\n");
}
void TestSubstStringNullInputs(void) {
char dest[100];
const char *source = "test";
const char *findToken = "test";
const char *replaceToken = "new";
assert(SubstString(NULL, findToken, source, dest, sizeof(dest)) == ERROR);
assert(SubstString(replaceToken, NULL, source, dest, sizeof(dest)) == ERROR);
assert(SubstString(replaceToken, findToken, NULL, dest, sizeof(dest)) == ERROR);
assert(SubstString(replaceToken, findToken, source, NULL, sizeof(dest)) == ERROR);
printf("Null inputs test passed\n");
}
void TestSubstStringInvalidSize(void) {
char dest[100];
const char *source = "test";
const char *findToken = "test";
const char *replaceToken = "new";
assert(SubstString(replaceToken, findToken, source, dest, 0) == ERROR);
assert(SubstString(replaceToken, findToken, source, dest, -1) == ERROR);
printf("Invalid size test passed\n");
}
void TestSubstStringEmptyFindToken(void) {
char dest[100];
const char *source = "test";
const char *findToken = "";
const char *replaceToken = "new";
assert(SubstString(replaceToken, findToken, source, dest, sizeof(dest)) == ERROR);
printf("Empty find token test passed\n");
}
void TestSubstStringBufferOverflow(void) {
char dest[10];
const char *source = "Hello world hello universe";
const char *findToken = "hello";
const char *replaceToken = "very long replacement string";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == ERROR);
printf("Buffer overflow test passed\n");
}
void TestSubstStringExactFit(void) {
char dest[15];
const char *source = "Hello world";
const char *findToken = "world";
const char *replaceToken = "universe";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 1);
assert(strcmp(dest, "Hello universe") == 0);
printf("Exact fit test passed\n");
}
void TestSubstStringMultipleReplacements(void) {
char dest[200];
const char *source = "aaa aaa aaa aaa";
const char *findToken = "aaa";
const char *replaceToken = "bbb";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 4);
assert(strcmp(dest, "bbb bbb bbb bbb") == 0);
printf("Multiple replacements test passed\n");
}
void TestSubstStringOverlappingTokens(void) {
char dest[100];
const char *source = "aaaaa";
const char *findToken = "aaa";
const char *replaceToken = "b";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 1);
assert(strcmp(dest, "baa") == 0);
printf("Overlapping tokens test passed\n");
}
void TestSubstStringSpecialCharacters(void) {
char dest[100];
const char *source = "Hello\nworld\thello";
const char *findToken = "\n";
const char *replaceToken = " ";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 1);
assert(strcmp(dest, "Hello world\thello") == 0);
printf("Special characters test passed\n");
}
void TestSubstStringUnicodeSafe(void) {
char dest[100];
const char *source = "Hello\x80\x81\x82 world";
const char *findToken = "\x80\x81";
const char *replaceToken = "test";
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == 1);
assert(strcmp(dest, "Hellotest\x82 world") == 0);
printf("Unicode safe test passed\n");
}
void TestSubstStringBoundaryConditions(void) {
char dest[3];
const char *source = "test";
const char *findToken = "test";
const char *replaceToken = "new";
// Should fail due to insufficient buffer space
int result = SubstString(replaceToken, findToken, source, dest, sizeof(dest));
assert(result == ERROR);
// Should succeed with exact space
char dest2[4];
result = SubstString(replaceToken, findToken, source, dest2, sizeof(dest2));
assert(result == 1); // "new" is 3 chars + null terminator = 4, which fits in dest2[4]
char dest3[5];
result = SubstString(replaceToken, findToken, source, dest3, sizeof(dest3));
assert(result == 1);
assert(strcmp(dest3, "new") == 0);
printf("Boundary conditions test passed\n");
}
int main(void) {
TestSubstStringNormalCase();
TestSubstStringNoMatch();
TestSubstStringEmptyReplace();
TestSubstStringNullInputs();
TestSubstStringInvalidSize();
TestSubstStringEmptyFindToken();
TestSubstStringBufferOverflow();
TestSubstStringExactFit();
TestSubstStringMultipleReplacements();
TestSubstStringOverlappingTokens();
TestSubstStringSpecialCharacters();
TestSubstStringUnicodeSafe();
TestSubstStringBoundaryConditions();
printf("All SubstString tests passed!\n");
return 0;
}
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